Home / 7,486.72-10,331.10-4,129.66

Finding the Fourth Proportional to 7,486.72, 10,331.10 and 4,129.66

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Solution

The fourth proportional to 7,486.72, 10,331.10 and 4,129.66 is: 5,698.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,486.72 : 10,331.10 = 4,129.66 : x
  2. Step 2: Convert to fraction form
    7,486.72/10,331.10 = 4,129.66/x
  3. Step 3: Cross multiply
    7,486.72x = 10,331.10 × 4,129.66
  4. Step 4: Simplify right side
    7,486.72x = 42,663,930.43
  5. Step 5: Solve for x
    x = 42,663,930.43/7,486.72
  6. Step 6: Final answer
    x = 5,698.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.